[ Identification | Description | Input parameters | Output parameters | Links ]

The templateDIFF Instrument

Simple monochromator Diffractometer for powders

Identification

• Site: Templates
• Author: E. Farhi
• Origin: LLB/ILL
• Date: 13 Apr 2006
• Version: 1.3

Description

A template powder diffractometer used as a tutorial at LLB.
Default geometry is from D20@ILL.

Usual values for monochromator d-spacing
PG       002 DM=3.355 AA (Highly Oriented Pyrolythic Graphite)
PG       004 DM=1.607 AA
Heusler  111 DM=3.362 AA (Cu2MnAl)
CoFe         DM=1.771 AA (Co0.92Fe0.08)
Ge       111 DM=3.266 AA
Ge       311 DM=1.714 AA
Ge       511 DM=1.089 AA
Ge       533 DM=0.863 AA
Si       111 DM=3.135 AA
Cu       111 DM=2.087 AA
Cu       002 DM=1.807 AA
Cu       220 DM=1.278 AA

Example: mcrun templateDIFF.instr lambda=1 RV=-1

Input parameters

Parameters in boldface are required; the others are optional.

Name	Unit	Description	Default
lambda	Angs	Wavelength at monochromator	1
DM	Angs	d-spacing of monochromator	3.355
Powder	str	File name for powder description	"Al2O3_sapphire.laz"
RV	m	Monochromator vertical curvature, 0 for flat, -1 for automatic setting	0
L1	m	Source-Monochromator distance	17
L2	m	Monochromator-Sample distance	3.2
L3	m	Sample-Detector distance	1.471
verbose	1	Print DIF configuration. 0 to be quiet	1

Links

• Source code for templateDIFF.instr.

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[ Identification | Description | Input parameters | Output parameters | Links ]

Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Fri May 11 08:41:09 2012

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Last Modified: Friday, 11-May-2012 10:41:09 CEST